Are you still doing Keto? I just started it last week and haven't experienced runny BMs, but the opposite. I find that the amount of cheese I'm eating is making everything too bulky and I'm having to strain on the toilet. I also can't resist eating the roasted salted mixed nuts that my husband buys, but they're terrible for my pouch and now I have a bad hemorrhoid.
I've read that it's popular to pair intermittent fasting with Keto. Have you done any research into that? I wonder how a j-pouch would react to, say, a 16-hour fast and 8 hours of eating. I'm a snacker throughout the day, and I justify that by saying that my j-pouch can really only handle small amounts of food at any one time, but maybe I'm just making that up. Thoughts?